Final answer:
Dispersal is a mechanism that affects population growth and can help regulate population size.
Step-by-step explanation:
Dispersal is a mechanism that affects population growth and can help regulate population size. It refers to the movement of offspring away from their parents to prevent competition for resources. For example, dandelion seeds disperse through wind to distant areas.
Therefore, the statement 'Dispersal is not a population regulatory mechanism' is false.